Phases compensated cube corner in the case of the laser interferometry

摘要

A retro-reflector with phases compensating cube corner comprises three return reflection surfaces. The first and the third return reflection surface may be coated with a phase-compensating film stack, which a 2nπ - phase difference to a reflection direction is induced, n being an integer, including 0 is. Alternatively, all three return reflection surfaces with a phase-compensating film stack, which induces a nπ - phase difference when linearly polarized light is handled, or a 2nπ - phase difference, when linearly or circularly polarized light is handled. Coated in such a way, the phases for vertical end of the cube corner polarization orientation and ellipticity of the incident light. Such a phases for vertical end cube corner may be used for the accuracy of distance measuring interferometers to improve. The cube corner light directed to and from other optical elements, including a polarizing beam splitter, a mirror and a quarter-wave plates.